SOLUTION: Solve each system of equations by using elimination. 9p + 7q = 16 7p − 5q = 25

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Question 889759: Solve each system of equations by using elimination.

9p + 7q = 16
7p − 5q = 25
Answer by Nigelyul(18) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the system of equations using elimination
9p+%2B+7q+=+16
7p+-+5q+=+25
Start by eliminating one variable.
9p+%2B+7q+=+16(7)
7p+-+5q+=+25(-9)
+63p++%2B+49q+=+122
-63p++%2B+45q+=+-255
------------------------
94q+=+-133
q+=+%28-133%2F94%29
Now eliminate the other variable.
9p+%2B+7q+=+16(5)
7p+-+5q+=+25(7)
45p+%2B+35q+=+80
49p+-+35q+=+175
------------------------
94p+=+255
p+=+%28255%2F94%29
The solutions are +q+=+%28-133%2F94%29+ and p+=+%28255%2F94%29+